Automatic positioning, clamping, lifting and pushing multifunctional feeding device for box bottom

Abstract

The present application relates to the field of rocket welding, and more particularly to a box bottom automatic positioning clamping and lifting pushing multifunctional feeding device.The device comprises a movable base assembly, an outer sliding box assembly, a middle sliding box assembly, an inner sliding box and a fixed inner support tool.The movable base assembly is horizontally movable and rotatable, and is connected with the outer sliding box assembly.The outer sliding box assembly is sleeved with the middle sliding box assembly, and the middle sliding box assembly is movable up and down relative to the outer sliding box assembly.The middle sliding box assembly is sleeved with the inner sliding box, and the inner sliding box is movable up and down relative to the middle sliding box assembly.The fixed inner support tool is connected to the top of the inner sliding box.By increasing the transition ring and the detachable inner support tool, the present application facilitates the translation, rotation, lifting and inner support of the "cap-shaped" common bottom assembly and the "bowl-shaped" box bottom assembly, and cooperates with other equipment to realize vertical welding of the ring seam of the tank body.

Description

Technical Field

[0001] This invention relates to the field of rocket welding, and in particular to a multi-functional loading device for automatic positioning, clamping, lifting and pushing of the bottom of a container. Background Technology

[0002] The circumferential seam friction stir welding of the 5m diameter propellant tank of the new generation manned launch vehicle adopts a vertical assembly welding scheme, which can significantly improve product quality and production efficiency. The welding principle of the vertical assembly of the circumferential seam of the propellant tank is that the tank is fixed during the welding process, and the welding actuator rotates around the tank to complete the welding of the circumferential seam.

[0003] The vertical assembly and welding of the storage tank body is planned to start from the rear bottom assembly and proceed sequentially to the front bottom assembly. No secondary assembly on the frame will be performed during the welding process. The fitting of the common bottom assembly and the bottom locking seam of the fuel tank section will be completed in the vertical state on the frame. This mode can eliminate the need for sealing welding of the fuel tank. During the entire assembly and welding process of the storage tank, only the sealing welding of the butt joint seam of the front bottom assembly / section of the oxygen tank needs to be performed.

[0004] In the welding process of the vertical assembly scheme of large-diameter storage tanks, the tank body is fixed, and the welding actuator rotates around the tank body to complete the welding of the circumferential seam. The common bottom assembly, the tank bottom assembly, and the matching internal support mechanism need to be pushed upward to the height of the welding actuator. Therefore, a multi-functional feeding device with automatic positioning, clamping, lifting and pushing of the tank bottom is required. This device pushes the common bottom assembly to the welding height and completes the internal support of the common bottom assembly and the bottom locking seam of the cylinder section. It also pushes the tank bottom assembly to the welding height and aligns the quadrant torsion angle and completes the internal support of the sealing seam of the cylinder section and the tank bottom assembly. In conjunction with the external pressure clamping system, it completes the reliable internal support and external pressure of the product, which facilitates the welding actuator to complete the circumferential seam welding of the storage tank body. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multi-functional feeding device for automatic positioning, clamping, lifting and pushing of the bottom of the tank, which facilitates the translation, rotation, lifting and internal support of the "hat-shaped" common bottom assembly and the "bowl-shaped" bottom assembly, and can be used in conjunction with other equipment to achieve vertical welding of the circumferential seam of the storage tank body.

[0006] This invention provides a multi-functional loading device for automatic positioning, clamping, lifting and pushing of the bottom of a box, comprising: a movable base assembly, an outer sliding box assembly, a middle sliding box assembly, an inner sliding box, and a fixed inner support fixture;

[0007] The mobile base assembly includes: a base, a mobile drive device, a rotary drive device, an external toothed rotary support, and an external sliding box connecting plate.

[0008] The base is hollow in the center, and an external toothed rotary support and an external sliding box connecting plate are connected on it. The external sliding box connecting plate has a hole in the center.

[0009] The base is connected to a moving drive device on its side, a rotating drive device on its upper surface, and a slider at its bottom.

[0010] The outer slide box assembly includes: an outer slide box, a first driven slide rail, and a first hydraulic balance cylinder;

[0011] The outer slide box is fixed to the outer slide box connecting plate; the left and right inner sides are respectively arranged with first driven slide rails, and the front and rear inner sides are respectively provided with first hydraulic balance cylinders.

[0012] The middle slide box assembly includes: a middle slide box, a second driven slide rail, and a second hydraulic balance cylinder;

[0013] The outer side of the middle slide box is connected to the first driven slide rail and the first hydraulic balance cylinder respectively;

[0014] The left and right inner sides of the middle sliding box are respectively provided with a second set of driven slide rails, and the front and rear inner sides are respectively provided with a second hydraulic balance cylinder.

[0015] The inner slide box is connected to the second driven slide rail and the second hydraulic balance cylinder on its outer side; its upper end face is connected to the fixed inner support fixture, and its lower end face is provided with a positioning interface.

[0016] The fixed internal support fixture includes: a welding base, an internal support block assembly, an external support block assembly, a wedge clamping block assembly, and a box bottom height adjustment device;

[0017] Both the inner support block assembly and the outer support block assembly are connected to the welded base, and the two are spaced apart;

[0018] Both the inner support block assembly and the outer support block assembly are driven by hydraulic cylinders. The slider at the bottom of the assembly runs along the guide rail, realizing the outward expansion and inward contraction of the inner support block assembly and the outer support block assembly.

[0019] A wedge block assembly is connected to the back of the welding base. The wedge block assembly corresponds to the inner support block assembly, thereby achieving back wedge tightening of the inner support block assembly.

[0020] The outer side of the wedge block assembly is connected to a box bottom height adjustment device.

[0021] Preferably, the base has round holes on both sides as passageways for operators to enter and exit.

[0022] Preferably, the rotary drive device meshes with the external toothed slewing support, driving the external toothed slewing support to rotate around the center of the base;

[0023] An outer sliding box connecting plate is connected to the external toothed slewing bearing.

[0024] Preferably, a positioning sleeve is provided at the center hole of the outer sliding box connecting plate to achieve positioning with the positioning hole at the bottom of the inner sliding box and to achieve the transmission of coaxiality.

[0025] Preferably, the first driven slide rail includes a first driving device and two first linear guide rail pairs, and the two first linear guide rail pairs are arranged symmetrically about the first driving device;

[0026] The first drive device includes: a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut seat, and a lower fixed support. The servo motor and the reducer are connected as one unit by bolts. The reducer is connected to the reducer mounting base by bolts. One end of the coupling is sleeved with the output shaft of the reducer, and the other end is sleeved with the ball screw. The two ends of the ball screw are fixedly supported by the upper fixed support and the lower fixed support, respectively. The entire drive device is fixed to the inner side of the outer slide box by bolt connection and key positioning.

[0027] The linear guide pair is equipped with multiple sets of sliders; the nut and slider are both connected to the outside of the middle slide box assembly by bolts.

[0028] Preferably, the second driven slide rail includes a second driving device and two second linear guide rail pairs, and the two second linear guide rail pairs are arranged symmetrically about the second driving device;

[0029] The second drive device includes: a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut, and a lower fixed support. The servo motor and the reducer are connected as one unit by bolts. The reducer is bolted to the reducer mounting base. One end of the coupling is sleeved with the output shaft of the reducer, and the other end is sleeved with the ball screw. The two ends of the ball screw are fixedly supported by the upper fixed support and the lower fixed support, respectively. The entire drive device is fixed to the inner side of the middle slide box by bolt connection and key positioning.

[0030] The linear guide pair is equipped with multiple sets of sliders; the nut seat and sliders are both connected to the outside of the inner slide box by bolts.

[0031] Preferably, the outer slide box is assembled from two left and right welded parts and two front and rear welded parts.

[0032] Preferably, the middle slide box is assembled from two left and right middle slide box welded parts and two front and rear middle slide box welded parts.

[0033] Preferably, the fixed internal support fixture includes: 8 sets of internal support block assemblies, 8 sets of external support block assemblies, 16 sets of wedge clamping block assemblies, and 4 sets of box bottom height adjustment devices;

[0034] Each pair of wedge block assemblies wedges and secures one set of inner support block assemblies.

[0035] Two adjacent sets of inner support block assemblies can be wedged tightly into the outer support block assemblies between them.

[0036] The bottom height adjustment device is fixed on the outside of the wedge block assembly.

[0037] Preferably, the box bottom height adjustment device includes two servo motors, two servo motor mounting bases, two couplings, two screw jacks, two screw jack mounting bases, and a positioning connecting plate;

[0038] The servo motor, servo motor mounting base, and coupling are connected to the side of the screw jack. The lower end of the screw jack is connected to two screw jack mounting bases. The two screw jack mounting bases are respectively connected to the outside of two adjacent wedge block assemblies by bolts. The two ends of the positioning connecting plate are respectively fixed to the top of the two screw jacks.

[0039] Preferably, it also includes a transition ring, the lower end face of which is fixedly connected to the connecting plate of the box height adjustment device, and the upper end face of which has a connecting hole.

[0040] Preferably, it also includes a detachable internal support fixture, which includes an upper support plate assembly, a lower lifting seat assembly, and an operating platform assembly. The lower lifting seat assembly of the detachable internal support fixture is fixedly connected to the upper end face of the fixed internal support fixture.

[0041] The top of the movable seat of the lower lifting seat assembly is connected to the upper support plate assembly by bolts. The fixed seat side of the upper support plate assembly is positioned to support the operating platform assembly, and the operating platform assembly is built on the inner surface of the bottom box assembly.

[0042] The operating platform assembly consists of several foldable work stools and connecting plates. It can be disassembled into several small components and easily moved out of the box through the side manhole of the bottom assembly.

[0043] Preferably, it also includes an aluminum alloy lifting platform, which is located inside the inner slide box and has a large-stroke lifting motion.

[0044] Compared with the prior art, the automatic bottom positioning, clamping, lifting and pushing multi-functional feeding device of the present invention has the following advantages:

[0045] (1) A product pre-assembly and automatic locking position lifting and mounting drive mechanism with open box bottom on the outside of the frame is invented to meet the lifting and locking requirements of 5m diameter common bottom and front and rear bottom circumferential seam assembly welding height.

[0046] (2) It can realize the automatic clamping and positioning of the "hat-shaped" common bottom assembly outside the frame, and the lifting of the common bottom assembly and the fixed internal support tooling inside the frame to meet the welding requirements of the common bottom assembly and the bottom locking circumferential seam of the cylinder section;

[0047] (3) It can realize the installation and positioning of the "bowl-shaped" box bottom assembly outside the frame, and the box bottom assembly and detachable internal support tooling inside the frame to meet the welding requirements of the box bottom assembly and the cylindrical section sealing ring seam;

[0048] (4) A dual-servo driven automatic alignment mechanism for quadrant angles of cylindrical segments was invented;

[0049] (5) A three-layer sliding box precision drive and guide device was invented to achieve precise upward lifting of the bottom product and the inner support device as a whole. Attached Figure Description

[0050] Figure 1 A schematic diagram showing the structure of a multi-functional loading device with automatic bottom positioning, clamping, lifting, and pushing functions;

[0051] Figure 2 This diagram shows the structure of the movable base assembly.

[0052] Figure 3 This diagram shows a partial structural representation of the mobile base assembly.

[0053] Figure 4 This diagram shows the structure of the outer sliding box assembly.

[0054] Figure 5 A diagram showing the composition of the outer sliding box assembly;

[0055] Figure 6 This diagram shows the structure of the middle slide box assembly.

[0056] Figure 7 A diagram showing the composition of the middle sliding box assembly;

[0057] Figure 8 This is a schematic diagram of the inner sliding box.

[0058] Figure 9 A schematic diagram showing the structure of a fixed internal support fixture;

[0059] Figure 10 This diagram shows the structure of the external support block assembly.

[0060] Figure 11 This diagram shows the structure of the internal support block assembly.

[0061] Figure 12 This diagram shows the connection between the wedge block assembly and the box bottom height adjustment device.

[0062] Figure 13 This diagram shows the structure of the transition ring assembly.

[0063] Figure 14 A schematic diagram showing the structure of the detachable internal support fixture;

[0064] Figure 15This is a schematic diagram of the upper support plate assembly.

[0065] Figure 16 This diagram shows the structure of the lower-level lifting platform assembly.

[0066] Figure 17 This diagram illustrates the structure of the operating platform components.

[0067] Figure 18 This image shows the status of the "hat-shaped" common-bottom assembly being put on the shelf.

[0068] Figure 19 This image shows the status of the "bowl-shaped" box bottom assembly being put on the shelf.

[0069] Figure 20 This diagram shows the lifting status of the "bowl-shaped" bottom assembly.

[0070] In the picture,

[0071] 1-Moving base assembly, 2-Outer slide box assembly, 3-Middle slide box assembly, 4-Inner slide box, 5-Fixed inner support fixture, 6-Transition ring, 7-Removable inner support fixture, 8-Aluminum alloy lifting platform, 9-Base, 10-Moving drive device, 11-External gear slewing support, 12-Rotation drive device, 13-Outer slide box connecting plate, 14-Positioning sleeve, 15-Left and right welded parts of the outer slide box, 16-First drive device, 17-First linear guide pair, 18-Front and rear welded parts of the outer slide box Components: 19-First hydraulic balance cylinder, 20-First connecting screw, 21-Left and right welded parts of the middle slide box, 22-Second drive device, 23-Second linear guide pair, 24-Front and rear welded parts of the middle slide box, 25-Second hydraulic balance cylinder, 26-Second connecting screw, 27-Welded base, 28-Outer support block assembly, 29-Inner support block assembly, 30-Wedge clamping block assembly, 31-Box bottom height adjustment device, 32-Upper support plate assembly, 33-Lower lifting seat assembly, 34-Operating platform assembly. Detailed Implementation

[0072] To further understand the present invention, embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the present invention.

[0073] The automatic positioning, clamping, lifting, and pushing multi-functional loading device for the bottom of the box is designed with the concept of "mounting the outer box bottom component / common bottom component, and pushing the box bottom component / common bottom component and internal support fixture inside the frame". It adopts a three-layer sliding box design concept, with the outer sliding box fixed and the two inner sliding boxes moving up and down. Through the lifting and lowering movement of the two layers of sliding boxes, the fixed internal support fixture and the "hat-shaped" common bottom component can be lifted to the welding height at the same time; it can also lift the detachable internal support fixture and the "bowl-shaped" box bottom component to the welding height at the same time.

[0074] The automatic positioning, clamping, lifting, and pushing multi-functional feeding device for the bottom of the box can meet the requirements of pushing the "hat-shaped" common bottom component and the "bowl-shaped" bottom component upward and aligning them with the quadrants. It has the ability to rotate ±180° around the central axis. Before circumferential welding, the components to be welded can be rotated and adjusted to ensure the best welding condition.

[0075] The fixed internal support fixture is fixedly installed on the inner sliding box to internally tighten the "hat-shaped" common bottom assembly and the bottom locking ring of the cylindrical section. After the fixed internal support fixture tightens the common bottom assembly, the operator can reach the fixed internal support platform through the aluminum alloy lift inside the bottom loading device to observe the tightened state of the common bottom assembly.

[0076] The detachable internal support fixture is fixedly installed on the fixed internal support fixture and is used to internally tighten the sealing circumferential seam between the cylindrical section and the "bowl-shaped" tank bottom assembly. After the support blocks and struts of the detachable internal support fixture are disassembled, they can be easily transported to the outside of the storage tank through the manhole flange. After the detachable internal support fixture tightens the tank bottom circumferential seam, the operator can reach the platform of the fixed internal support fixture through the aluminum alloy elevator inside the tank bottom loading device to observe the tightened state of the tank bottom assembly.

[0077] Embodiments of the present invention disclose a multi-functional loading device for automatic positioning, clamping, lifting, and pushing of the box bottom, such as... Figure 1 As shown, it includes: a movable base assembly 1, an outer sliding box assembly 2, a middle sliding box assembly 3, an inner sliding box 4, and a fixed inner support fixture 5;

[0078] like Figure 2 and Figure 3 As shown, the mobile base assembly 1 includes: a base 9, a mobile drive device 10, an external toothed rotary support 11, a rotary drive device 12, an outer sliding box connecting plate 13, and a positioning sleeve 14.

[0079] The base 9 is hollow in the center, and a rotatable outer sliding box connecting plate 13 is connected to it. The outer sliding box connecting plate 13 has a hole in the center. A positioning sleeve 14 is provided at the center hole to achieve coaxial positioning with the positioning hole of the inner sliding box.

[0080] Specifically, a rotary drive device 12 and an external toothed rotary support 11 are fixed on the upper surface of the base 9; the rotary drive device 12 meshes with the external toothed rotary support 11, driving the external toothed rotary support 11 to rotate around the center of the base 9.

[0081] The external toothed slewing support 11 is connected to an external sliding box connecting plate 13.

[0082] The base 9 is connected to the side of the moving drive device 10, and a slider is provided at the bottom for guiding the movement of the welding base.

[0083] The device of the present invention is used to be arranged on a bed assembly to realize two actions: horizontal movement and rotation about the center of the base.

[0084] The mobile drive device 10 specifically includes a servo motor, a reducer, and a reducer mounting base. The servo motor is connected to the reducer, and the reducer is connected to the reducer mounting base. A pinion is sleeved on the splined shaft of the reducer, and the pinion meshes with the rack on the bed assembly to transmit torque.

[0085] Preferably, two sets of the mobile drive device 10 are provided, which are respectively connected to the front and rear sides of the base 9;

[0086] The rotary drive device 12 specifically includes a servo motor, a reducer, and a reducer mounting plate. The servo motor is connected to the reducer, and the reducer is connected to the reducer mounting plate. A pinion is sleeved on the splined shaft of the reducer. The pinion meshes with the external gear rotary support 11, driving the external gear rotary support 11 to rotate around the center of the base 9.

[0087] Preferably, two sets of the rotary drive device 12 are provided, which are arranged opposite to each other on both sides of the external toothed rotary support 11;

[0088] Both horizontal movement and rotation around the center use two sets of servo motors for dual servo motor backlash elimination. By adjusting the tension torque between the two motors, the goal of eliminating gear backlash and improving positioning accuracy is achieved.

[0089] The base 9 has two or more round holes on both sides, which serve as access passages for operators.

[0090] like Figure 4 and Figure 5 As shown, the outer slide box assembly 2 includes: an outer slide box, a first drive-driven slide rail, and a first hydraulic balance cylinder;

[0091] The outer slide box is fixed on the outer slide box connecting plate 13; the outer slide box assembly and the above components rotate around the center of the movable base.

[0092] Taking full account of the manufacturability of large components, the outer slide box is assembled from two left and right outer slide box welded parts 15 and two front and rear outer slide box welded parts 18, ensuring good openness of the surface to be processed. The welded parts are connected by the first connecting screw 20.

[0093] The outer slide box has first driven slide rails arranged on its left and right inner sides, and first hydraulic balance cylinders 19 arranged on its front and rear inner sides to balance the weight of the middle slide box assembly 3 and above components.

[0094] The first driven slide rail includes a first drive device 16 and two first linear guide rail pairs 17;

[0095] The first driving device 16 includes:

[0096] The system includes a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut, and a lower fixed support. The servo motor and reducer are bolted together. The reducer is bolted to the reducer mounting base. One end of the coupling is sleeved on the output shaft of the reducer, and the other end is sleeved on the ball screw. The two ends of the ball screw are fixedly supported by the upper and lower fixed supports, respectively. The entire drive unit is fixed to the inner side of the outer slide box by bolted connection and key positioning. The screw nut is bolted to the outer side of the middle slide box.

[0097] The linear guide pair is equipped with multiple sets of sliders; the nut and slider are both connected to the outside of the middle slide box assembly by bolts.

[0098] like Figure 6 and Figure 7 As shown, the middle slide box assembly 3 includes: a middle slide box, a second driven slide rail, and a second hydraulic balance cylinder 25;

[0099] Taking full account of the manufacturability of large components, the middle sliding box is assembled from two left and right middle sliding box welded parts 21 and two front and rear middle sliding box welded parts 24, ensuring good openness of the surface to be processed. The welded parts are connected by second connecting screws 26.

[0100] The outer side of the middle slide box is connected to the first driven slide rail and the first hydraulic balance cylinder respectively, so that the middle slide box assembly 3 can move up and down relative to the outer slide box assembly 2.

[0101] The left and right inner sides of the middle slide box are respectively provided with a second set of driven slide rails, and the front and rear inner sides are respectively provided with a second hydraulic balance cylinder 25.

[0102] Specifically, the second driven slide rail includes a second drive unit 22 and two second linear guide rail pairs 23;

[0103] Specifically, a second drive device 22 and two sets of second linear guide rail pairs 23 are respectively arranged on the inner sides of the left and right welded parts 21 of the two middle sliding boxes, serving as the drive and guide devices for the inner sliding box 4. A second hydraulic balance cylinder 25 is respectively arranged on the inner sides of the front and rear welded parts 24 of the two middle sliding boxes to balance the gravity of the inner sliding box 4 and the above components. The inner sliding box 4 moves up and down relative to the middle sliding box assembly 3.

[0104] The second drive device 22 includes:

[0105] The system includes a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut, and a lower fixed support. The servo motor and reducer are bolted together. The reducer is bolted to the reducer mounting base. One end of the coupling is fitted with the output shaft of the reducer, and the other end is fitted with the ball screw. The two ends of the ball screw are fixedly supported by the upper and lower fixed supports, respectively. The entire drive unit is fixed to the inner side of the middle slide box by bolted connection and key positioning. The reducer mounting base, upper fixed support, and lower fixed support are fixed to the inner side of the slide box. The screw nut is bolted to the outer side of the inner slide box.

[0106] The linear guide pair is equipped with multiple sets of sliders; the nut seat and sliders are both connected to the outside of the inner slide box by bolts.

[0107] like Figure 8 As shown, the inner sliding box 4 is a welded component, made of plate material, and is hollow inside.

[0108] The outer side of the inner slide box 4 is connected to the second driven slide rail and the second hydraulic balance cylinder respectively;

[0109] Its upper end face is connected to the fixed inner support fixture, and its lower end face is provided with a positioning interface. The inner slide box 4 enables the coaxial transmission between the movable base assembly 1 and the fixed inner support fixture 5. The left and right sides of the inner slide box 4 are provided with interfaces for the second drive device 22 and the second linear guide pair 23, which are connected to the second drive device 22 and the second linear guide pair 23, so that the inner slide box 4 can move up and down relative to the middle slide box assembly 3. The front and rear sides of the inner slide box 4 are provided with interfaces for the second hydraulic balance cylinder 25, which are connected to the second hydraulic balance cylinder 25 to achieve the purpose of balancing the gravity of the inner slide box 4 and the above components.

[0110] like Figures 9-12 As shown, the fixed internal support fixture 5 includes: a welding base 27, an internal support block assembly 29, an external support block assembly 28, a wedge-tightening block assembly 30, and a box bottom height adjustment device 31.

[0111] Both the inner support block assembly 29 and the outer support block assembly 28 are connected to the welding base 27 and are spaced apart. The adjacent outer support blocks and inner support blocks are in a "male and female mold fit" manner. The interface between two adjacent support blocks is at a certain angle to the radial direction. Two axial wedge clamping components based on the inclined plane force amplification principle are added to the back of each set of inner support block assemblies to achieve reliable locking of all radial support block assemblies.

[0112] Specifically, both the inner support block assembly 29 and the outer support block assembly 28 are connected by the hydraulic cylinder rear support and the welded base 27;

[0113] Both the inner support block assembly 29 and the outer support block assembly 28 are driven by hydraulic cylinders to ensure strong internal support force. The slider at the bottom of the assembly runs along the guide rail to realize the outward expansion and inward retraction of the inner support block assembly 29 and the outer support block assembly 28. The guide rail is located on the welding base 27.

[0114] The back of the welding base 27 is connected to a wedge block assembly 30, which corresponds to the inner support block assembly 29, thereby achieving back wedge tightening of the inner support block assembly 29; ensuring that no yielding occurs when subjected to the huge upsetting force during welding.

[0115] Preferably, the internal support fixture includes: 8 sets of internal support block assemblies 29, 8 sets of external support block assemblies 28, and 16 sets of wedge-tightening block assemblies 30;

[0116] Two sets of wedge-tightening block assemblies 30 wedge-tighten and fix one set of inner support block assemblies 29.

[0117] The outer side of the wedge block assembly 30 is connected to the bottom adjustment device 31.

[0118] The box bottom height adjustment device 31 includes two servo motors, two servo motor mounting bases, two couplings, two screw jacks, two screw jack mounting bases, and a positioning connecting plate.

[0119] The servo motor, servo motor mounting base, and coupling are connected to the side of the screw jack. The lower end of the screw jack is connected to two screw jack mounting bases. The two screw jack mounting bases are respectively connected to the outside of two adjacent wedge block assemblies by bolts. The two ends of the positioning connecting plate are respectively fixed to the top of the two screw jacks.

[0120] It is preferable to set up 4 sets of box bottom height adjustment devices 31.

[0121] Each of the four sets of box bottom height adjustment devices 31 consists of two servo motors, couplings, screw lifts and a set of positioning connecting plates. Their main function is to adjust the height of the "hat-shaped" common bottom component to match the outer surface of the support block of the inner support tooling with the inner surface of the common bottom component, so as to ensure a good inner support effect.

[0122] In the welding of the "bowl-shaped" box bottom assembly, the present invention preferably includes a transition ring 6. The lower end face of the transition ring 6 is fixedly connected to the box height adjustment device 31, and the upper end face has a connecting hole, which is fixedly connected to the box bottom assembly by a pin positioning bolt, and is used to switch the fixed internal support state of the common bottom assembly to the box bottom assembly sealed and detachable internal support state.

[0123] Preferably, it also includes a detachable internal support fixture 7, which includes an upper support plate assembly 32, a lower lifting seat assembly 33, and an operating platform assembly 34, and is used as an internal support for the sealing circumferential weld of the "bowl-shaped" box bottom assembly.

[0124] The lower lifting assembly 33 of the detachable inner support fixture 7 is fixed to the upper surface of the "hat-shaped" common bottom assembly fixed inner support fixture 5 by bolts;

[0125] The top of the movable seat of the lower lifting seat assembly 33 is connected to the upper support plate assembly 32 by bolts. The fixed seat side of the upper support plate assembly 32 is positioned to support the operating platform assembly 34, and the operating platform assembly is built on the inner surface of the bottom box assembly.

[0126] The operating platform component 34 is assembled from several foldable work stools and connecting plates. It can be disassembled into several small components and easily moved out of the box through the side manhole of the bottom component.

[0127] After the detachable internal support fixture's support blocks and struts are disassembled, they can be easily transported to the outside of the storage tank through the manhole flange. Sufficient safety distance is maintained around the manhole flange during transport to prevent product damage. The mandrel can be pulled out from the center hole (diameter Ф500mm) at the bottom of the tank. After the detachable internal support fixture tightens the circumferential seam at the bottom of the tank, operators can access the internal support platform via the aluminum alloy lift inside the bottom loading device, enter the internal platform, and observe the tightening status of the bottom components.

[0128] The present invention also includes an aluminum alloy lift 8, which is disposed inside the inner slide box 4.

[0129] Operators can safely access the operating platform of the inner support fixture 5 via the aluminum alloy lift 8, facilitating pre- and post-weld cleaning of welds, auxiliary tightening of the inner support, and assembly status inspection. The aluminum alloy lift 8 is made of high-strength aluminum profiles, featuring a stable and compact structure, smooth lifting, and reliable safety.

[0130] The device of this invention is applicable to the mounting and lifting of "cap-shaped" common-bottom assemblies, such as... Figure 18 As shown; also applicable to the mounting and lifting of "bowl-shaped" box bottom components, such as Figure 19 and 20 As shown.

[0131] The main technical specifications of the multi-functional feeding device for automatic positioning, clamping, lifting and pushing of cylindrical sections of the present invention are as follows:

[0132] (1) Meets the assembly and welding height lifting and locking requirements of 5m diameter common bottom components and box bottom components;

[0133] (2) It has the function of horizontal traversing along the bed assembly, with a traversing speed range of 0~28m / min, which is steplessly adjustable;

[0134] (3) It has the function of rotating ±180° around the central axis, with a rotation speed range of 0~28m / min, which is infinitely adjustable;

[0135] (4) The lifting speed range of the fixed internal support fixture is 0~1m / min, which is infinitely adjustable;

[0136] (5) The fixed internal support fixture is hydraulically driven and has strong internal support capacity. The single tensioning force of the 8 sets of internal support blocks and the 8 sets of external support blocks reaches 20t, and the tensioning force of each of the 16 sets of wedge blocks can reach 200t. It also has the ability to adjust the height of the common bottom component.

[0137] (6) The detachable internal support fixture has a lifting function of 300mm. The internal support block assembly can be flipped and the external support block assembly can be retracted, which facilitates weld quality inspection and quick restoration of the internal support tightness.

[0138] The main features are:

[0139] (1) The automatic positioning, clamping, lifting and pushing multi-functional loading device for the bottom of the box is a multi-functional loading device for the bottom of the box that integrates translation, rotation, lifting and internal support functions.

[0140] (2) It can realize the mounting of the common bottom component / box bottom component outside the frame, and the pushing of the common bottom component / box bottom component and the internal support tooling inside the frame;

[0141] (3) The lifting and lowering motion of large components of the device is all driven by ball screws and guided by linear guides to ensure precise driving and guidance;

[0142] (4) The device uses two sets of hydraulic cylinders to balance the weight of large components (middle slide box, inner slide box and above components);

[0143] (5) The fixed internal support fixture adopts a hydraulic drive to achieve internal tightening of the common bottom assembly and the bottom locking ring of the cylinder section, and has the ability to adjust the height of the common bottom assembly;

[0144] The device is equipped with an aluminum alloy lift, which allows operators to easily access the platform of the fixed internal support fixture.

[0145] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0146] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-functional loading device for automatic positioning, clamping, lifting, and pushing of materials at the bottom of a box, characterized in that, include: Mobile base assembly, outer slide box assembly, middle slide box assembly, inner slide box, fixed inner support fixture; The mobile base assembly includes: a base, a mobile drive device, a rotary drive device, an external toothed rotary support, and an external sliding box connecting plate. The base is hollow in the center, and an external toothed rotary support and an external sliding box connecting plate are connected on it. The external sliding box connecting plate has a hole in the center. The base is connected to a moving drive device on its side, a rotating drive device on its upper surface, and a slider at its bottom. The outer slide box assembly includes: an outer slide box, a first driven slide rail, and a first hydraulic balance cylinder; The outer slide box is fixed to the outer slide box connecting plate; the left and right inner sides are respectively arranged with first driven slide rails, and the front and rear inner sides are respectively provided with first hydraulic balance cylinders. The middle slide box assembly includes: a middle slide box, a second driven slide rail, and a second hydraulic balance cylinder; The outer side of the middle slide box is connected to the first driven slide rail and the first hydraulic balance cylinder respectively; The left and right inner sides of the middle sliding box are respectively provided with a second set of driven slide rails, and the front and rear inner sides are respectively provided with a second hydraulic balance cylinder. The inner slide box is connected to the second driven slide rail and the second hydraulic balance cylinder on its outer side; its upper end face is connected to the fixed inner support fixture, and its lower end face is provided with a positioning interface. The fixed internal support fixture includes: a welding base, an internal support block assembly, an external support block assembly, a wedge clamping block assembly, and a box bottom height adjustment device; Both the inner support block assembly and the outer support block assembly are connected to the welded base, and the two are spaced apart; Both the inner support block assembly and the outer support block assembly are driven by hydraulic cylinders. The slider at the bottom of the assembly runs along the guide rail, realizing the outward expansion and inward contraction of the inner support block assembly and the outer support block assembly. A wedge block assembly is connected to the back of the welding base. The wedge block assembly corresponds to the inner support block assembly, thereby achieving back wedge tightening of the inner support block assembly. The outer side of the wedge block assembly is connected to a box bottom height adjustment device.

2. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom as described in claim 1, characterized in that, The base has round holes on both sides as passageways for operators to enter and exit.

3. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom as described in claim 1, characterized in that, The rotary drive device meshes with the external toothed rotary support, driving the external toothed rotary support to rotate around the center of the base; An outer sliding box connecting plate is connected to the external toothed slewing bearing.

4. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom as described in claim 1, characterized in that, A positioning sleeve is provided at the center hole of the outer sliding box connecting plate to achieve positioning with the positioning hole at the bottom of the inner sliding box and to achieve coaxiality transmission.

5. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom as described in claim 1, characterized in that, The first driven slide rail includes a first driving device and two first linear guide rail pairs, and the two first linear guide rail pairs are arranged symmetrically about the first driving device. The first drive device includes: a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut seat, and a lower fixed support. The servo motor and the reducer are connected as one unit by bolts. The reducer is connected to the reducer mounting base by bolts. One end of the coupling is sleeved with the output shaft of the reducer, and the other end is sleeved with the ball screw. The two ends of the ball screw are fixedly supported by the upper fixed support and the lower fixed support, respectively. The entire drive device is fixed to the inner side of the outer slide box by bolt connection and key positioning. The linear guide pair is equipped with multiple sets of sliders; the nut and slider are both connected to the outside of the middle slide box assembly by bolts.

6. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, The second driven slide rail includes a second drive device and two second linear guide rail pairs, and the two second linear guide rail pairs are arranged symmetrically about the second drive device; The second drive device includes: a servo motor, a reducer, a reducer mounting base, a coupling, a ball screw, an upper fixed support, a screw nut seat, and a lower fixed support. The servo motor and the reducer are connected as one unit by bolts. The reducer is bolted to the reducer mounting base. One end of the coupling is sleeved with the output shaft of the reducer, and the other end is sleeved with the ball screw. The two ends of the ball screw are fixedly supported by the upper fixed support and the lower fixed support, respectively. The entire drive device is fixed to the inner side of the middle slide box by bolt connection and key positioning. The linear guide pair is equipped with multiple sets of sliders; the nut seat and sliders are both connected to the outside of the inner slide box by bolts.

7. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, The outer slide box is assembled from two left and right welded parts and two front and rear welded parts.

8. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, The middle slide box is assembled from two left and right welded parts and two front and rear welded parts.

9. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, The fixed internal support fixture includes: 8 sets of internal support block assemblies, 8 sets of external support block assemblies, 16 sets of wedge clamping block assemblies and 4 sets of box bottom height adjustment devices; Each pair of wedge block assemblies wedges and secures one set of inner support block assemblies; Two adjacent sets of inner support block assemblies can be wedged tightly into the outer support block assemblies between them; The bottom height adjustment device is fixed on the outside of the wedge block assembly.

10. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, The box bottom height adjustment device includes two servo motors, two servo motor mounting bases, two couplings, two screw jacks, two screw jack mounting bases, and a positioning connecting plate. The servo motor, servo motor mounting base, and coupling are connected to the side of the screw jack. The lower end of the screw jack is connected to two screw jack mounting bases. The two screw jack mounting bases are respectively connected to the outside of two adjacent wedge block assemblies by bolts. The two ends of the positioning connecting plate are respectively fixed to the top of the two screw jacks.

11. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, It also includes a transition ring, the lower end face of which is fixedly connected to the connecting plate of the box height adjustment device, and the upper end face of which has a connecting hole.

12. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, It also includes a detachable internal support fixture, which includes an upper support plate assembly, a lower lifting seat assembly, and an operating platform assembly. The lower lifting seat assembly of the detachable internal support fixture is fixedly connected to the upper end face of the fixed internal support fixture. The top of the movable seat of the lower lifting seat assembly is connected to the upper support plate assembly by bolts. The fixed seat side of the upper support plate assembly is positioned to support the operating platform assembly, and the operating platform assembly is built on the inner surface of the bottom box assembly. The operating platform assembly consists of several foldable work stools and connecting plates. It can be disassembled into several small components and easily moved out of the box through the side manhole of the bottom assembly.

13. The multi-functional feeding device for automatic positioning, clamping, lifting, and pushing of the box bottom according to claim 1, characterized in that, It also includes an aluminum alloy lift, which is installed inside the inner slide box and has a large stroke lifting motion.

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